coreboot July 2014

coreboot@coreboot.org

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92 discussions

Re: [coreboot] Request for Intel Haswell info
by ron minnich 02 Jul '14

02 Jul '14

In the last few years I've argued for even 3! One to remain untouched, one to hack, and one as the backup when you burn the hack one up :-) ron On Wed, Jul 2, 2014 at 9:19 AM, Gregg Levine <gregg.drwho8(a)gmail.com> wrote: > Hello! > What he said. Ron you are very right here. The rules were one to use, > and one to ,ah, hack. > > Now I freely admit all I know about bringing Coreboot to the > Chromebooks is what is discussed here. But I did indeed study and > follow the earlier efforts, and doing these ports can be considered > useful and even important. > > I for one would indeed want to buy a Chromebook wearing Coreboot and > Haswell based. > ----- > Gregg C Levine gregg.drwho8(a)gmail.com > "This signature fought the Time Wars, time and again." > > > On Wed, Jul 2, 2014 at 12:09 PM, ron minnich <rminnich(a)gmail.com> wrote: > > As always, when doing a new board, get a system that is known to work > with > > coreboot and has your chipset in it. You should get several (never just > > one!) of the haswell chromebooks, build coreboot, make sure you can make > it > > all work, then try the port to your board. > > > > ron > > > > > > On Wed, Jul 2, 2014 at 12:11 AM, David Hendricks < > david.hendricks(a)gmail.com> > > wrote: > >> > >> On Tue, Jul 1, 2014 at 5:50 PM, Paul Wilcox-Baker < > wilcoxbaker(a)gmail.com> > >> wrote: > >>> > >>> Dear coreboot, > >>> > >>> We are interested in coreboot for the Intel Haswell processors. > >>> coreboot appears to be used in the Acer C720 and HP Chromebooks > >>> that use Haswell processors. I see no reference to this processor, > >>> or to these products in the source code that I downloaded recently. > >> > >> > >> Are you sure? 'git grep haswell' turns up 160 references as of 931c1d. > >> > >> > >>> There is also no reference to these products in the "products > >>> supported" web page of coreboot.org. > >> > >> > >> http://www.coreboot.org/Supported_Motherboards#Laptops > >> > >>> > >>> We are developing hardware using the Haswell processor and 82C226 > >>> PCH part. How do we port coreboot to these devices? As Acer and HP > >>> have done it, it's obviously possible. > >> > >> > >> Start by grepping for NORTHBRIDGE_INTEL_HASWELL in the source tree. > >> > >> Note: The following URL has a codename <--> marketing name decoder for > >> Chromebooks: > >> > http://www.chromium.org/chromium-os/developer-information-for-chrome-os-dev… > >> > >>> Any advice gratefully received! > >>> > >>> Thanks, Paul. > >>> > >>> -- > >>> coreboot mailing list: coreboot(a)coreboot.org > >>> http://www.coreboot.org/mailman/listinfo/coreboot > >> > >> > >> > >> -- > >> coreboot mailing list: coreboot(a)coreboot.org > >> http://www.coreboot.org/mailman/listinfo/coreboot > > > > > > > > -- > > coreboot mailing list: coreboot(a)coreboot.org > > http://www.coreboot.org/mailman/listinfo/coreboot >

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Re: [coreboot] Request for Intel Haswell info
by Gregg Levine 02 Jul '14

02 Jul '14

Hello! What he said. Ron you are very right here. The rules were one to use, and one to ,ah, hack. Now I freely admit all I know about bringing Coreboot to the Chromebooks is what is discussed here. But I did indeed study and follow the earlier efforts, and doing these ports can be considered useful and even important. I for one would indeed want to buy a Chromebook wearing Coreboot and Haswell based. ----- Gregg C Levine gregg.drwho8(a)gmail.com "This signature fought the Time Wars, time and again." On Wed, Jul 2, 2014 at 12:09 PM, ron minnich <rminnich(a)gmail.com> wrote: > As always, when doing a new board, get a system that is known to work with > coreboot and has your chipset in it. You should get several (never just > one!) of the haswell chromebooks, build coreboot, make sure you can make it > all work, then try the port to your board. > > ron > > > On Wed, Jul 2, 2014 at 12:11 AM, David Hendricks <david.hendricks(a)gmail.com> > wrote: >> >> On Tue, Jul 1, 2014 at 5:50 PM, Paul Wilcox-Baker <wilcoxbaker(a)gmail.com> >> wrote: >>> >>> Dear coreboot, >>> >>> We are interested in coreboot for the Intel Haswell processors. >>> coreboot appears to be used in the Acer C720 and HP Chromebooks >>> that use Haswell processors. I see no reference to this processor, >>> or to these products in the source code that I downloaded recently. >> >> >> Are you sure? 'git grep haswell' turns up 160 references as of 931c1d. >> >> >>> There is also no reference to these products in the "products >>> supported" web page of coreboot.org. >> >> >> http://www.coreboot.org/Supported_Motherboards#Laptops >> >>> >>> We are developing hardware using the Haswell processor and 82C226 >>> PCH part. How do we port coreboot to these devices? As Acer and HP >>> have done it, it's obviously possible. >> >> >> Start by grepping for NORTHBRIDGE_INTEL_HASWELL in the source tree. >> >> Note: The following URL has a codename <--> marketing name decoder for >> Chromebooks: >> http://www.chromium.org/chromium-os/developer-information-for-chrome-os-dev… >> >>> Any advice gratefully received! >>> >>> Thanks, Paul. >>> >>> -- >>> coreboot mailing list: coreboot(a)coreboot.org >>> http://www.coreboot.org/mailman/listinfo/coreboot >> >> >> >> -- >> coreboot mailing list: coreboot(a)coreboot.org >> http://www.coreboot.org/mailman/listinfo/coreboot > > > > -- > coreboot mailing list: coreboot(a)coreboot.org > http://www.coreboot.org/mailman/listinfo/coreboot

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Re: [coreboot] Request for Intel Haswell info
by ron minnich 02 Jul '14

02 Jul '14

As always, when doing a new board, get a system that is known to work with coreboot and has your chipset in it. You should get several (never just one!) of the haswell chromebooks, build coreboot, make sure you can make it all work, then try the port to your board. ron On Wed, Jul 2, 2014 at 12:11 AM, David Hendricks <david.hendricks(a)gmail.com> wrote: > On Tue, Jul 1, 2014 at 5:50 PM, Paul Wilcox-Baker <wilcoxbaker(a)gmail.com> > wrote: > >> Dear coreboot, >> >> We are interested in coreboot for the Intel Haswell processors. >> coreboot appears to be used in the Acer C720 and HP Chromebooks >> that use Haswell processors. I see no reference to this processor, >> or to these products in the source code that I downloaded recently. >> > > Are you sure? 'git grep haswell' turns up 160 references as of 931c1d. > > > There is also no reference to these products in the "products >> supported" web page of coreboot.org. >> > > http://www.coreboot.org/Supported_Motherboards#Laptops > > >> We are developing hardware using the Haswell processor and 82C226 >> PCH part. How do we port coreboot to these devices? As Acer and HP >> have done it, it's obviously possible. >> > > Start by grepping for NORTHBRIDGE_INTEL_HASWELL in the source tree. > > Note: The following URL has a codename <--> marketing name decoder for > Chromebooks: > http://www.chromium.org/chromium-os/developer-information-for-chrome-os-dev… > > > Any advice gratefully received! >> >> Thanks, Paul. >> >> -- >> coreboot mailing list: coreboot(a)coreboot.org >> http://www.coreboot.org/mailman/listinfo/coreboot >> > > > -- > coreboot mailing list: coreboot(a)coreboot.org > http://www.coreboot.org/mailman/listinfo/coreboot >

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question about tp_smapi modules and phc-intel
by Charles Devereaux 02 Jul '14

02 Jul '14

Hello I'm currently trying to make the tp_smapi modules work thinkpad_ec and hdaps were easy to patch (basically adding a special case and HDAPS_DMI_MATCH_INVERT_CUSTOM to match only on DMI_PRODUCT_VERSION since DMI_BOARD_VENDOR was not set at all with the coreboot I was using) However, tp_smapi seems more complicated. It complains with SMAPI not supported (ID=0xda) Before I try to hardcode this value, is it handled on coreboot side? (I could not find any reference to smapi in the source code) As the headers says: "This driver exposes some features of the System Management Application Program Interface (SMAPI) BIOS found on ThinkPad laptops. It works on models in which the SMAPI BIOS runs in SMM and is invoked by writing to the APM control port 0xB2". The SMAPI part is mostly interesting to get and set the battery charge start/stop threshold, which is interesting to prolong the life of LiIon batteries - but maybe it can be done differently within coreboot? Same question for setting CPU voltage - phc-intel seems far to eager to undervolt, without any noticeable change in acpi temperatures or crashes on mprime, even at the lowest values. I wonder if the voltage changes are handled or silently ignored.

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Re: [coreboot] Success in replicating a fast boot time to the browser on a x60
by ron minnich 02 Jul '14

02 Jul '14

This is great. We've gotten an acer c720 down to 1.7 seconds from power button to chromeos login screen. I've always wanted to get it done in under a second. I hope you can get there! ron

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Success in replicating a fast boot time to the browser on a x60
by Charles Devereaux 02 Jul '14

02 Jul '14

Hello Among the things that first impressed me with coreboot was the boot time demonstrated in https://www.youtube.com/watch?v=HKdLhbmjrDI If anyone is interested, I could successfully replicate a similar boot time on a debian wheezy, with a "modern" coreboot chain loading to grub2, on a x60 tablet running at 1.66 GHz with a cheap SSD : $ systemd-analyze Startup finished in 2.244s (kernel) + 611ms (userspace) = 2.856s Some notes : - it requires a kernel recompilation to get rid of modules that cause delays (.config available upon request) - it requires systemd and following the suggestions on http://www.holgerschurig.de/linux/systemd.htmt, along with creating several other services and configuration files (available upon requests) to be compatible with debian wheezy - I had to add a sleep 3 before starting the web browser with an actual site to get the site to load (due to dhcp/wpa_supplicant/etc) - but with a clock in hand, it boots just as fast as the video to the browser, and if you just want a x-terminal (or even better, a console mode getty), you don't need that! I use linux-3.10.45 and systemd-stable v210, and you can see the result from a systemd-analyze - about 2.8 seconds after coreboot+grub, which take about 3 seconds. Add the delay for the web browser and you're good. The results (varying between 2.4 and 2.9 seconds) are stable with the reboots, and might be optimized even more, as I just did some very basic things (I wanted to keep the virtual console mode for text mode stuff, etc) $ systemd-analyze blame 106ms systemd-logind.service 84ms systemd-udev-trigger.service 82ms cron.service 82ms gpm.service 79ms systemd-user-sessions.service 47ms powertop.service 45ms systemd-tmpfiles-setup-dev.service 38ms dev-hugepages.mount 37ms sys-kernel-debug.mount 34ms tmp.mount 28ms dev-mqueue.mount 26ms systemd-networkd.service 22ms systemd-remount-fs.service 16ms loadkeys.service 16ms systemd-fsck-root.service 14ms systemd-update-utmp.service 14ms systemd-journal-flush.service 12ms udisks.service 12ms ifupdown-clean.service 11ms systemd-sysctl.service 11ms systemd-tmpfiles-setup.service 11ms sshd@0-192.168.1.115:220-192.168.1.107:62685.service 10ms kmod-static-nodes.service 8ms chain.mount 7ms systemd-rfkill(a)rfkill0.service 7ms dev-disk-by\x2duuid-c622cc92\x2dbaf6\x2d4663\x2db6ee\x2d4932b39f 5ms systemd-random-seed.service 4ms systemd-udevd.service 1ms systemd-rfkill(a)rfkill1.service

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Re: [coreboot] Investigating the high pitched noise on the x60 tablet
by Peter Stuge 02 Jul '14

02 Jul '14

Charles Devereaux wrote: > > The noise is created by switching between states. > > > > I expect that the noise comes from power supply circuitry. > > > > Use an oscilloscope in clever ways to find the source. > > I don't have an oscilloscope, however I created the following script > following glugglug suggestion - it fixes the noise I'm afraid it doesn't fix anything. You've treated the symptom instead of investigating what the cause is. > All I'm left is with a very small crackling noise, Right, you've treated the more obvious symptom and are left with a smaller symptom. The problem unfortunately remains. //Peter

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Re: [coreboot] Request for Intel Haswell info
by David Hendricks 02 Jul '14

02 Jul '14

On Tue, Jul 1, 2014 at 5:50 PM, Paul Wilcox-Baker <wilcoxbaker(a)gmail.com> wrote: > Dear coreboot, > > We are interested in coreboot for the Intel Haswell processors. > coreboot appears to be used in the Acer C720 and HP Chromebooks > that use Haswell processors. I see no reference to this processor, > or to these products in the source code that I downloaded recently. > Are you sure? 'git grep haswell' turns up 160 references as of 931c1d. There is also no reference to these products in the "products > supported" web page of coreboot.org. > http://www.coreboot.org/Supported_Motherboards#Laptops > We are developing hardware using the Haswell processor and 82C226 > PCH part. How do we port coreboot to these devices? As Acer and HP > have done it, it's obviously possible. > Start by grepping for NORTHBRIDGE_INTEL_HASWELL in the source tree. Note: The following URL has a codename <--> marketing name decoder for Chromebooks: http://www.chromium.org/chromium-os/developer-information-for-chrome-os-dev… Any advice gratefully received! > > Thanks, Paul. > > -- > coreboot mailing list: coreboot(a)coreboot.org > http://www.coreboot.org/mailman/listinfo/coreboot >

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Request for Intel Haswell info
by Paul Wilcox-Baker 02 Jul '14

02 Jul '14

Dear coreboot, We are interested in coreboot for the Intel Haswell processors. coreboot appears to be used in the Acer C720 and HP Chromebooks that use Haswell processors. I see no reference to this processor, or to these products in the source code that I downloaded recently. There is also no reference to these products in the "products supported" web page of coreboot.org. We are developing hardware using the Haswell processor and 82C226 PCH part. How do we port coreboot to these devices? As Acer and HP have done it, it's obviously possible. Any advice gratefully received! Thanks, Paul.

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SeaBIOS TPM support on Chromebook Acer C720
by Stefan Berger 01 Jul '14

01 Jul '14

Hello! I added support from the TPM to SeaBIOS and have parts of the BIOS functionality successfully running on a Chromebook Acer C720 (as example hardware). Here are some findings on the Acer: The TPM is successfully detected but sending TPM_Startup(ST_Clear) to the TPM fails since either coreboot or some other firmware seems to already have initialized the TPM, which is fine, and also extended PCR 0 with at least one hash. Ideally there would be a TCPA ACPI table containing information about what was logged, since otherwise the state of the PCR seems not that useful. SeaBIOS's TPM extensions could then also use this TCPA table and add its own logs into it along with extending PCRs in the TPM. So, in this case the TPM SeaBIOS extensions don't log anything and adding additional ACPI tables to the existing coreboot tables seems 'impractical'. I was wondering if coreboot could add such a table if a TPM was found to be present? Regards, Stefan An older version of the SeaBIOS TPM patches can be found here (for now): http://www.seabios.org/pipermail/seabios/2011-August/002252.html

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coreboot July 2014